Ferdinand Anton Franz Karsch-Haack|
(1853 - 1936) Germany
Entomologist and ethnologist
Curator at the Zoological Museum of Berlin University; he had many articles on homosexuality published in different journals, and wrote books on same-sex behaviour in non-European cultures.
Karsch-Haack's most significant contribution to the sexual emancipation movement in Germany consisted of demonstrating the occurrence of same-sex sexual activity throughout the animal kingdom, among the so-called primitive peoples, and in all non-Western cultures.